Operating Touch Control (MBUX multimedia system)
Shows the home screen
swipe in the direction of the arrow (navigate)
Press (confirm)
Returns to the previous display
Makes or accepts a call
Rejects or ends a call
Reduce volume: swipe down
Switch off the sound: press 
Starts LINGUATRONIC
Calls up favourites (press briefly) or adds favourites and themes (press and hold)For optimum operation of Touch Control , use the tip of your thumb if possible.
You can navigate through menus and lists via the touch-sensitive surface of Touch Control using a single-finger swipe, for example:
To enter a character:
enter a character using the keyboard. To select a menu option:
scroll in a list and press Touch Control . To move the digital map:
swipe in any direction.